It’s the closest analogy that makes sense at a glance. It’s clearly not the mouth, and since we mammals only have one other air vent, that just leaves the nose. However in actuality they have non-breathing scent detectors that are totally separate from three breathing system. It’s like if your nose could smell but not be breathed through; instead you breathed in through your mouth and had slits on your throat used to exhale.
Why do people think gills are the nose?
It’s the closest analogy that makes sense at a glance. It’s clearly not the mouth, and since we mammals only have one other air vent, that just leaves the nose. However in actuality they have non-breathing scent detectors that are totally separate from three breathing system. It’s like if your nose could smell but not be breathed through; instead you breathed in through your mouth and had slits on your throat used to exhale.